In grid environment, resources and services distributed with dynamic and heterogeneous characteristics. Efficient service discovery is one challenging issue in grid environment. In this paper, we propose a new distributed and hierarchical mechanism for service discovery in grid environment. This approach has five layers that in previous works presented in… (More)
In this paper a method for ranking efficient DMUs using Bootstrap has been introduced. The main drawback in existing method is that, DMU which is efficient but is not extreme efficient can not be ranked. The method proposed here is able to rank all kinds of efficient DMUs. The method is used in ranking 74 high schools from the north of IRAN.